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@uitrit gieten atrat @Hita JOHN GREACEN, JR., OF NEW YORK, N. Y. lLetter Patent No. 66,703, dated July 16, 1867; anteclatedfifztlg/ 5,1867.

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T()K ALL WIIOM IT MAY ONCERN:

13e it known that I, JOHN GREACEN, Jr., o' the eity'and State of NewYorkfha'fvc invented and made a cer tain new and useful improvement inSmoke-Conductors for Railways; and I do hereby declare the following tobe a full, clear, and exact description of the said invention, referencebeing had to the annexed drawing, making part of' this specification,wherein- Figure 1 represents my said smoke-conductor as applied to anelevated railway passing through a building; and

Figure 2 is a longitudinal section of the smoke-conductor.

Similar marks of reference denote the same parts.

In cities and at depots the smoke and products of combustion escapingfrom locomotives are aproliiic source ot annoyance and often injury, andiu cities particularly the smoke and escape steam have caused locomotivetravel generally to be prohibited. The nature of my said inventioneonsists'in a smoke-chamber, with an opening running along over thetrack, in close proximity to the funnel or smoke-pipe, so that'theproducts of combustion will pass directly into such chamber, incombination with chimneys or vertical hues connecting with suchchambers, to draw oif the products of combustion and vapors, and deliverthem at such an altitude thatthey will not be an annoyance.;l hence-theuse of'locomotives will cease to be objectionable, even through cities.In the drawing a is the track, the smoke-chamber, e the longitudinalopening in such chamber over the smoke-funnel or pipe fl of a locomotiveengine, cis an opening from the chamber c to the chimney or verticalflue f. In iig. 1 I have shown two tracks and two smokechambers, havingseparate connections to the tine f; but chim` neys may be used onbothsides or over the chamber or chambers, to' convey away the smoke andgases. If desired, the edges ofthe opening into the smoke-chamber may beraised, as shown, so that the smoke, Stel, may have a trough into whichto pass in case the condition of the atmosphere is such as to cause thesmoke to descend. These edges retain condensation in cases where thesteam and smoke escape together, and suitable pipes or conductors may beemployed to convey away the water of condensation, and there may bependent flanges at the sides of the opening between which the smoke-pipepasses. It will be evident that asmoke-cham ber and chimney of thecharacter described may be placed over a track at a depot to prevent thesmoke being blown into the depot. A railroad fitted with thesmoke-chamber its entire length may run through cities without thelocomotive being an annoyance, as said railway may be elevated and passthrough the centrai portions of the blocks of buildings, crossing overthe respective streets inan open'or closed bridge, with thesmoke-conductors, formed as aforesaid, over the smoke-pipe or funnel.This improvement may be introdtieed in tunnels by forming a chamber over`the cars, from which the smoke, gases, tite., are drawn by the usualair draughts, or by chimneys specially provided forthe same; or thesmoke may be withdrawn from the chamber by blowers, if required. Wherethis smoke-chamber is introduced over a city railroad it may be built inor aspart of the buildings themselves; and when constructed at thoseportions of a railway where there are not ordinary buildings to supportthe smoke-chamber and ues, these may be sustained upon columns or in anyother convenient manner, so that the longitudinal opening for th'e smokemay come directly over the smoke-stack or chimney of the locomotive.

What I claim, and -desire to secure by Letters Patent, is-.-

A smoke-chamber, with an opening running longitudinally of the track, incombination with dues or chimneys, as set forth, so that the smoke fromthe chimney of a locomotive, while in motion, may be received by saidchamber and conveyed away as specified.

In witness whcreofI have hereunto set my signature this seventeenth dayof July, A. D. 1866:

JOHN GREACEN, JR.

Witnesses:

Trios. Gao. HAROLD, GEO. D. WALKER.

